/* =========================================================================
 * Trắc nghiệm — giao diện theo ảnh thiết kế (trang chủ trắc nghiệm + màn làm bài).
 * template-parts/quiz/{page,hub,hero,search,rows,results,views,hub-side,exam}.php, assets/js/quiz.js.
 * Gốc .lqz (khung rộng 1500px, chữ Inter); .lqz.is-dark = chế độ tối; --lqz-fs = hệ số cỡ chữ câu hỏi (A− / A+).
 * ========================================================================= */
.lqz {
	--c-blue: #1f63e0;
	--c-blue-2: #1750bd;
	--c-blue-soft: #eaf1fe;
	--c-blue-line: #b8cff7;
	--c-violet: #6b5be6;
	--c-violet-2: #8b6cf2;
	--c-navy: #101f3f;
	--c-ink: #1e2a40;
	--c-ink-2: #3e4a61;
	--c-muted: #6b7690;
	--c-line: #e1e6ef;
	--c-line-2: #edf0f6;
	--c-bg: #f4f6fb;
	--c-card: #fff;
	--c-green: #22a05a;
	--c-green-2: #178049;
	--c-green-soft: #eaf7ee;
	--c-green-line: #cde9d6;
	--c-red: #e0473f;
	--c-red-soft: #fff3f2;
	--c-orange: #f59e0b;
	--c-orange-soft: #fff4de;
	--r: 12px;
	--r-sm: 8px;
	--shadow: 0 1px 2px rgba(16, 31, 63, .04), 0 6px 18px rgba(16, 31, 63, .05);
	--lqz-fs: 1;
	width: 100vw;
	max-width: 100vw;
	margin-left: calc(50% - 50vw);
	padding: 18px 16px 44px;
	background: var(--c-bg);
	color: var(--c-ink);
	font: 15px/1.5 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
	transition: background .2s, color .2s;
}
.lqz *, .lqz *::before, .lqz *::after { box-sizing: border-box; }
.lqz [hidden] { display: none !important; }
.lqz svg.lo-icon { flex-shrink: 0; }
:where(.lqz) a { color: inherit; text-decoration: none; }
:where(.lqz) :where(h1, h2, h3, p, ul, ol, dl, dd, figure) { margin: 0; }
:where(.lqz) :where(ul, ol) { padding: 0; list-style: none; }
.lqz :is(h1, h2, h3) { font-family: inherit; letter-spacing: -.01em; }
:where(.lqz) :where(h1, h2, h3) { color: var(--c-navy); }
:where(.lqz) button { font-family: inherit; color: inherit; }
/* Bỏ khoảng đệm trên của khung nội dung theme (dải trắng giữa header và trang). */
body.lo-qz-page .site-content { margin-top: 0 !important; margin-bottom: 0 !important; padding-top: 0 !important; padding-bottom: 0 !important; }
.lqz kbd { display: inline-block; min-width: 22px; padding: 1px 6px; border: 1px solid var(--c-line); border-bottom-width: 2px; border-radius: 5px; background: var(--c-card); font-family: inherit; font-size: 12.5px; font-weight: 600; line-height: 1.5; text-align: center; vertical-align: 1px; }

/* ------------------------------------------------------------------ Chung */
.lqz-card { border: 1px solid var(--c-line); border-radius: var(--r); background: var(--c-card); box-shadow: var(--shadow); }
.lqz-box { margin-top: 18px; padding: 18px 22px 22px; border: 1px solid var(--c-line); border-radius: var(--r); background: var(--c-card); box-shadow: var(--shadow); }
.lqz-box__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.lqz-box__head h2, .lqz-box__h1 { display: flex; align-items: center; gap: 12px; font-size: 23px; font-weight: 700; line-height: 1.25; }
.lqz-box__head h2 svg, .lqz-box__h1 svg { width: 30px; height: 30px; color: var(--c-blue); }
.lqz-box__lead { margin: -4px 0 14px; color: var(--c-muted); }
.lqz-i-flame { color: #f05a1a !important; fill: #ffd2b8; }
.lqz-more { display: inline-flex; align-items: center; gap: 6px; color: var(--c-blue) !important; font-size: 14.5px; font-weight: 600; white-space: nowrap; }
.lqz-more svg { width: 16px; height: 16px; }
.lqz-count { color: var(--c-muted); font-size: 14.5px; }
.lqz-count b { color: var(--c-blue); font-size: 18px; }
.lqz-empty { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px; padding: 26px 16px; border: 1.5px dashed var(--c-line); border-radius: var(--r-sm); color: var(--c-muted); text-align: center; }
.lqz-empty svg { width: 18px; height: 18px; }
.lqz-empty a { color: var(--c-blue); font-weight: 600; }
.lqz-empty--sm { padding: 14px; font-size: 14px; }
.lqz-h2 { margin: 22px 0 10px !important; font-size: 18px; }
.lqz-h3 { margin: 22px 0 8px !important; font-size: 16.5px; }

.lqz-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; padding: 0 18px; border: 1px solid transparent; border-radius: var(--r-sm); background: none; font-size: 15px; font-weight: 600; line-height: 1.2; white-space: nowrap; cursor: pointer; transition: background .15s, border-color .15s, color .15s, box-shadow .15s; }
.lqz-btn svg { width: 18px; height: 18px; }
.lqz-btn--primary { background: var(--c-blue); color: #fff !important; box-shadow: 0 4px 12px rgba(31, 99, 224, .22); }
.lqz-btn--primary:hover { background: var(--c-blue-2); }
.lqz-btn--outline { border-color: var(--c-blue-line); background: var(--c-card); color: var(--c-blue) !important; }
.lqz-btn--outline:hover { border-color: var(--c-blue); background: var(--c-blue-soft); }
.lqz-btn--ghost { border-color: var(--c-line); background: var(--c-card); color: var(--c-ink-2) !important; }
.lqz-btn--soft { background: #e3edff; color: var(--c-blue) !important; font-size: 16px; }
.lqz-btn--soft:hover { background: #d4e3ff; }
.lqz-btn--danger { border: 1.5px solid #f0a19c; background: var(--c-red-soft); color: var(--c-red) !important; font-size: 17px; font-weight: 700; }
.lqz-btn--danger:hover { border-color: var(--c-red); }
.lqz-btn--sm { min-height: 34px; padding: 0 14px; font-size: 14px; }
.lqz-btn--lg { min-height: 46px; padding: 0 24px; font-size: 16.5px; }
.lqz-btn--block { width: 100%; }
.lqz-btn:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }

.lqz-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; max-width: 1500px; margin: 0 auto 14px; color: var(--c-muted); font-size: 15.5px; }
.lqz-crumbs a { display: inline-flex; color: var(--c-ink-2); }
.lqz-crumbs a:first-child { padding-right: 12px; border-right: 1px solid var(--c-line); }
.lqz-crumbs a:hover { color: var(--c-blue); }
.lqz-crumbs svg { width: 18px; height: 18px; }
.lqz-crumbs > svg { width: 15px; height: 15px; color: #9aa4b8; }
.lqz-crumbs span { color: var(--c-ink); }
.lqz-bar-mark { display: inline-block; width: 4px; height: 19px; border-radius: 3px; background: var(--c-blue); }

.lqz-pill { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: 6px; font-size: 13px; font-weight: 500; white-space: nowrap; }
.lqz-pill--violet { background: #f1ecff; color: #6d4fd6; }
.lqz-pill--rose { background: #ffecee; color: #d23a4f; }
.lqz-pill--teal { background: #e6f7f2; color: #11826a; }
.lqz-pill--amber { background: #fff6dc; color: #b07605; }
.lqz-pill--sky { background: #e8f3ff; color: #1f6fc4; }
.lqz-pill--green { background: #e9f8ec; color: #208a47; }
.lqz-pill--orange { background: #fff0e4; color: #d0661a; }
.lqz-pill--blue { background: #eaf0ff; color: #2c5bd8; }

/* ------------------------------------------------------------------ Trang chủ: khung 2 cột */
.lqz__wrap { display: grid; grid-template-columns: minmax(0, 1fr) 376px; gap: 20px; align-items: start; max-width: 1500px; margin: 0 auto; }
.lqz__main { min-width: 0; }
.lqz__side { display: flex; flex-direction: column; gap: 18px; }

/* Banner */
.lqz-hero { position: relative; display: flex; align-items: center; gap: 24px; min-height: 186px; padding: 22px 30px 24px 44px; overflow: hidden; border-radius: 14px; background: radial-gradient(circle at 85% 20%, rgba(80, 140, 255, .45), transparent 45%), linear-gradient(110deg, #0c2f7a 0%, #134aa8 55%, #1c5fd0 100%); color: #fff; box-shadow: 0 10px 30px rgba(12, 47, 122, .25); }
.lqz-hero::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .035) 0 2px, transparent 2px 22px); pointer-events: none; }
.lqz-hero__text { position: relative; flex: 1; min-width: 0; padding-right: 270px; }
.lqz .lqz-hero__title { display: flex; align-items: center; gap: 22px; color: #fff; font-size: 40px; font-weight: 800; line-height: 1.15; letter-spacing: -.02em; }
.lqz-hero__cap { width: 76px; height: 76px; margin: 2px 0 0 -10px; color: #8fb8ff; flex-shrink: 0; }
.lqz-hero__lead { max-width: 620px; margin: 6px 0 18px 98px !important; color: rgba(255, 255, 255, .88); font-size: 17.5px; line-height: 1.45; }
.lqz-hero__chips { display: flex; flex-wrap: wrap; gap: 10px 12px; margin-left: 42px !important; }
.lqz-hero__chips li { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border: 1px solid rgba(255, 255, 255, .22); border-radius: 99px; background: rgba(255, 255, 255, .1); color: #fff; font-size: 14.5px; font-weight: 600; backdrop-filter: blur(4px); }
.lqz-hero__chips svg { width: 18px; height: 18px; color: #cfe0ff; }
.lqz-hero__art { position: absolute; right: 22px; bottom: 6px; width: 300px; }

/* Tìm kiếm + bộ lọc */
.lqz-search { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 16px; margin-top: 20px; }
.lqz-search__box { display: flex; align-items: center; gap: 12px; height: 48px; padding: 0 16px; border: 1px solid #d5dce8; border-radius: var(--r-sm); background: var(--c-card); }
.lqz-search__box:focus-within { border-color: var(--c-blue); box-shadow: 0 0 0 3px rgba(31, 99, 224, .12); }
.lqz-search__box svg { width: 21px; height: 21px; color: var(--c-muted); }
.lqz-search__box input { flex: 1; min-width: 0; height: 100%; padding: 0; border: 0 !important; background: none !important; box-shadow: none !important; color: var(--c-ink); font: inherit; font-size: 16px; outline: 0; }
.lqz-search__go { min-width: 136px; min-height: 48px; font-size: 16px; }
.lqz-search__adv { min-height: 48px; border-color: #d5dce8; color: var(--c-ink) !important; font-size: 16px; }
.lqz-search__adv.is-on { border-color: var(--c-blue); background: var(--c-blue-soft); color: var(--c-blue) !important; }
.lqz-filter { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; gap: 12px; align-items: end; padding: 16px; border: 1px solid var(--c-line); border-radius: var(--r); background: var(--c-card); box-shadow: var(--shadow); }
.lqz-filter__field { display: flex; flex-direction: column; gap: 5px; color: var(--c-muted); font-size: 13px; font-weight: 600; }
.lqz-filter__field select { height: 42px; padding: 0 10px; border: 1px solid #d5dce8; border-radius: var(--r-sm); background: var(--c-card); color: var(--c-ink); font: inherit; font-size: 15px; font-weight: 400; }
.lqz-filter__btns { display: flex; gap: 8px; }

/* Danh mục */
.lqz-cats__grid { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 12px; }
.lqz-tile { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; height: 104px; padding: 10px 6px; border-radius: 10px; text-align: center; transition: transform .15s, box-shadow .15s; }
.lqz-tile:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(16, 31, 63, .09); }
.lqz-tile__icon svg { width: 34px; height: 34px; }
.lqz-tile b { color: var(--c-navy); font-size: 14.5px; font-weight: 700; line-height: 1.25; }
.lqz-tile small { color: var(--c-muted); font-size: 13px; }
.lqz-tile--blue { background: #eef3ff; } .lqz-tile--blue .lqz-tile__icon { color: #2b63d9; }
.lqz-tile--violet { background: #f3efff; } .lqz-tile--violet .lqz-tile__icon { color: #7a4fe0; }
.lqz-tile--rose { background: #fff0f1; } .lqz-tile--rose .lqz-tile__icon { color: #e0414f; }
.lqz-tile--teal { background: #ebf9f5; } .lqz-tile--teal .lqz-tile__icon { color: #12937a; }
.lqz-tile--orange { background: #fff3ea; } .lqz-tile--orange .lqz-tile__icon { color: #ef7b22; }
.lqz-tile--amber { background: #fff8e3; } .lqz-tile--amber .lqz-tile__icon { color: #e4a210; }
.lqz-tile--sky { background: #edf6ff; } .lqz-tile--sky .lqz-tile__icon { color: #1c7fd6; }
.lqz-tile--green { background: #edf9f0; } .lqz-tile--green .lqz-tile__icon { color: #23a052; }
.lqz-tile--gray { background: #f2f4f7; } .lqz-tile--gray .lqz-tile__icon { color: #5d6a80; }

/* Đề nổi bật */
.lqz-feat__frame { position: relative; margin: 0 18px; }
.lqz-feat__track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 3 * 18px) / 4); column-gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding: 2px 2px 6px; }
.lqz-feat__track::-webkit-scrollbar { display: none; }
.lqz-ecard { display: flex; flex-direction: column; gap: 8px; scroll-snap-align: start; padding: 0 0 14px; overflow: hidden; border: 1px solid var(--c-line); border-radius: 10px; background: var(--c-card); box-shadow: 0 2px 8px rgba(16, 31, 63, .06); }
.lqz-ecard__cover { position: relative; display: block; height: 82px; overflow: hidden; background: #e9eef6; }
.lqz-ecard__cover :is(img, svg) { display: block; width: 100%; height: 100%; object-fit: cover; }
.lqz-badge { position: absolute; top: 8px; right: 8px; padding: 2px 9px; border-radius: 5px; color: #fff; font-size: 12.5px; font-weight: 700; }
.lqz-badge--hot { background: #ef3e36; }
.lqz-badge--new { background: #22a05a; }
.lqz-ecard__title { min-height: 46px; padding: 0 16px; font-size: 16.5px; font-weight: 700; line-height: 1.4; }
.lqz-ecard__title a:hover { color: var(--c-blue); }
.lqz-meta { display: flex; flex-wrap: wrap; gap: 4px 10px; padding: 0 14px !important; color: var(--c-muted); font-size: 12.5px; }
.lqz-ecard .lqz-meta { flex-wrap: nowrap; white-space: nowrap; }
.lqz-meta li { display: inline-flex; align-items: center; gap: 5px; }
.lqz-meta svg { width: 14px; height: 14px; }
.lqz-ecard .lqz-btn { width: auto; margin: 4px 16px 0; min-height: 38px; border-width: 1.5px; }
.lqz-ecard .lqz-btn svg { width: 15px; height: 15px; }
.lqz-feat__nav { position: absolute; top: 108px; z-index: 2; display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--c-line); border-radius: 50%; background: var(--c-card); box-shadow: 0 4px 14px rgba(16, 31, 63, .14); cursor: pointer; }
.lqz-feat__nav svg { width: 20px; height: 20px; }
.lqz-feat__nav.is-prev { left: -22px; }
.lqz-feat__nav.is-next { right: -22px; }
.lqz-feat__nav:disabled { opacity: 0; pointer-events: none; }
.lqz-dots { display: flex; justify-content: center; gap: 8px; margin-top: 12px; }
.lqz-dots i { width: 8px; height: 8px; border-radius: 50%; background: #d3dae6; }
.lqz-dots i.is-on { background: var(--c-blue); }

/* Danh sách đề dạng hàng */
.lqz-rows li.lqz-row { display: grid; grid-template-columns: 28px minmax(0, 1fr) 130px 86px 92px 104px auto; align-items: center; gap: 12px; padding: 8px 4px; border-bottom: 1px solid var(--c-line-2); }
.lqz-rows li.lqz-row:last-child { border-bottom: 0; }
.lqz-row__icon { color: var(--c-blue); }
.lqz-row__icon svg { width: 22px; height: 22px; }
.lqz-row__title { overflow: hidden; color: var(--c-ink); font-size: 15.5px; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
a.lqz-row__title:hover { color: var(--c-blue); }
.lqz-row__title small { display: block; color: var(--c-muted); font-size: 12.5px; font-weight: 400; }
.lqz-row__n { display: inline-flex; align-items: center; gap: 6px; color: var(--c-ink-2); font-size: 14px; white-space: nowrap; }
.lqz-row__n svg { width: 16px; height: 16px; color: var(--c-muted); }
.lqz-row--att { grid-template-columns: 28px minmax(0, 1fr) 130px 100px auto !important; }
.lqz-score { justify-self: start; padding: 3px 10px; border-radius: 6px; font-size: 13.5px; font-weight: 700; }
.lqz-score--good { background: var(--c-green-soft); color: var(--c-green-2); }
.lqz-score--mid { background: var(--c-orange-soft); color: #b06a00; }
.lqz-score--low { background: var(--c-red-soft); color: var(--c-red); }
.lqz-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.lqz-chip { display: inline-flex; align-items: center; height: 34px; padding: 0 14px; border: 1px solid var(--c-line); border-radius: 99px; background: var(--c-card); color: var(--c-ink-2) !important; font-size: 14px; }
.lqz-chip.is-on, .lqz-chip:hover { border-color: var(--c-blue); background: var(--c-blue); color: #fff !important; }

/* Cột phải trang chủ */
.lqz-card__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.lqz-card__head h2, .lqz-card__h { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; white-space: nowrap; }
.lqz-card__head h2 svg { width: 26px; height: 26px; }
.lqz-i-trophy { color: #f0a50a; fill: #ffe08a; }
.lqz-i-tools { color: var(--c-blue); }
.lqz__side > .lqz-card { padding: 18px 20px; }
.lqz-hello { display: flex; align-items: center; gap: 16px; min-height: 100px; }
.lqz-hello__av { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.lqz-hello__av--icon { display: inline-flex; align-items: center; justify-content: center; background: var(--c-blue); color: #fff; }
.lqz-hello__av--icon svg { width: 30px; height: 30px; }
.lqz-hello__text { display: flex; flex: 1; flex-direction: column; align-items: flex-start; gap: 6px; min-width: 0; font-size: 18px; }
.lqz-hello__text b { font-weight: 700; }
.lqz-hello__text small { color: var(--c-muted); font-size: 13.5px; }
.lqz-hello__go { width: 22px; height: 22px; color: var(--c-ink-2); }
.lqz-plan { padding: 2px 12px; border-radius: 99px; font-size: 13.5px; font-weight: 600; }
.lqz-plan--pro { background: #ffe9a8; color: #7a4f00; }
.lqz-plan--free { background: var(--c-blue-soft); color: var(--c-blue); }
.lqz-prog__body { display: flex; align-items: center; gap: 22px; }
.lqz-donut { width: 112px; height: 112px; flex-shrink: 0; transform: rotate(-90deg); }
.lqz-donut circle { fill: none; stroke-width: 11; }
.lqz-donut__track { stroke: #e8edf4; }
.lqz-donut__val { stroke: var(--c-green); stroke-linecap: round; transition: stroke-dasharray .5s; }
.lqz-donut text { fill: var(--c-navy); font-size: 25px; font-weight: 700; transform: rotate(90deg); transform-origin: 60px 60px; }
.lqz-prog__list { display: flex; flex-direction: column; gap: 12px; font-size: 15px; }
.lqz-prog__list li { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.lqz-prog__list svg { width: 21px; height: 21px; }
.lqz-prog__list .is-done { color: #fff; fill: var(--c-green); }
.lqz-prog__list .is-doing { color: #fff; fill: var(--c-blue); }
.lqz-prog__list .is-todo { color: #9aa4b8; }
.lqz-rank li { display: grid; grid-template-columns: 30px 36px minmax(0, 1fr) auto; align-items: center; gap: 12px; padding: 7px 0; font-size: 15px; }
.lqz-rank img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.lqz-rank__pos { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; color: var(--c-ink-2); font-weight: 700; }
.lqz-rank__pos--1, .lqz-rank__pos--2, .lqz-rank__pos--3 { border-radius: 50% 50% 50% 50% / 46% 46% 54% 54%; color: #fff; font-size: 13px; }
.lqz-rank__pos--1 { background: radial-gradient(circle at 35% 30%, #ffe27a, #e9a90d); box-shadow: 0 2px 0 #c98b05; }
.lqz-rank__pos--2 { background: radial-gradient(circle at 35% 30%, #e8eef8, #a9b6cb); box-shadow: 0 2px 0 #8d9bb2; }
.lqz-rank__pos--3 { background: radial-gradient(circle at 35% 30%, #ffc79a, #db7b33); box-shadow: 0 2px 0 #b8611f; }
.lqz-rank__name { overflow: hidden; color: var(--c-ink); text-overflow: ellipsis; white-space: nowrap; }
.lqz-rank__name small { display: block; color: var(--c-muted); font-size: 12.5px; }
.lqz-rank__name em { color: var(--c-blue); font-style: normal; font-size: 13px; }
.lqz-rank b { color: var(--c-navy); font-weight: 700; white-space: nowrap; }
.lqz-rank li.is-me { margin: 0 -10px; padding: 7px 10px; border-radius: 8px; background: var(--c-blue-soft); }
.lqz-rank--full li { padding: 10px 6px; border-bottom: 1px solid var(--c-line-2); }
.lqz-quick { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.lqz-quick__item { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; height: 92px; padding: 8px; border: 1px solid var(--c-line); border-radius: 10px; color: var(--c-ink) !important; font-size: 15px; font-weight: 500; text-align: center; transition: border-color .15s, box-shadow .15s; }
.lqz-quick__item:hover { border-color: var(--c-blue-line); box-shadow: 0 6px 16px rgba(16, 31, 63, .08); }
.lqz-quick__item > svg:first-child { width: 30px; height: 30px; }
.lqz-quick__item--amber > svg:first-child { color: #f39c12; }
.lqz-quick__item--blue > svg:first-child { color: var(--c-blue); }
.lqz-quick__item--rose > svg:first-child { color: #e53950; }
.lqz-quick__go { width: 16px; height: 16px; margin-left: 2px; vertical-align: -3px; color: var(--c-ink-2); }
.lqz-quick__item span { white-space: nowrap; font-size: 14.5px; }

/* Thống kê, câu hỏi yêu thích */
.lqz-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.lqz-kpis li { padding: 14px 16px; border: 1px solid var(--c-line); border-radius: 10px; background: var(--c-bg); }
.lqz-kpis small { display: block; color: var(--c-muted); font-size: 13px; }
.lqz-kpis b { color: var(--c-navy); font-size: 24px; }
.lqz-qfav { display: flex; flex-direction: column; gap: 14px; counter-reset: qf; }
.lqz-qfav > li { padding: 16px 18px; border: 1px solid var(--c-line); border-radius: 10px; }
.lqz-qfav__q { margin-bottom: 8px !important; color: var(--c-navy); font-size: 16.5px; font-weight: 700; }
.lqz-qfav ul li { padding: 4px 0; color: var(--c-ink-2); }
.lqz-qfav ul li.is-right { color: var(--c-green-2); font-weight: 600; }
.lqz-qfav__ex { margin-top: 8px !important; padding: 8px 12px; border-radius: 8px; background: var(--c-green-soft); font-size: 14.5px; }
.lqz-qfav .lqz-btn { margin-top: 10px; }

/* Giao diện thẻ cũ (lịch sử, kết quả, yêu thích, ngân hàng) nằm trong khung mới */
.lqz .lo-qz.lo-qz--embed { width: auto; max-width: none; margin: 0; padding: 0; background: none; }

/* ------------------------------------------------------------------ Màn làm bài: 3 cột */
.lqz-exam { display: grid; grid-template-columns: 284px minmax(0, 1fr) 322px; gap: 14px; align-items: start; max-width: 1500px; margin: 0 auto; }
.lqz-exam__left, .lqz-exam__right { display: flex; flex-direction: column; gap: 14px; }

.lqz-einfo { padding: 18px 12px 12px; }
.lqz-einfo__top { display: flex; align-items: center; gap: 14px; padding: 0 8px; }
.lqz-einfo__icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 12px; background: linear-gradient(140deg, #8a7af5, #5e4fd8); color: #fff; flex-shrink: 0; box-shadow: 0 6px 14px rgba(94, 79, 216, .3); }
.lqz-einfo__icon svg { width: 28px; height: 28px; }
.lqz .lqz-einfo__title { font-size: 18px; font-weight: 700; line-height: 1.35; }
.lqz-einfo__meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 14px 0 0 !important; padding: 0 10px 14px !important; border-bottom: 1px solid var(--c-line-2); color: var(--c-ink-2); font-size: 14.5px; }
.lqz-einfo__meta li { display: inline-flex; align-items: center; gap: 8px; }
.lqz-einfo__meta li.is-wide { flex-basis: 100%; }
.lqz-einfo__meta svg { width: 18px; height: 18px; color: var(--c-muted); }
.lqz-enav { display: flex; flex-direction: column; gap: 4px; margin-top: 12px; }
.lqz-enav__item { display: flex; align-items: center; gap: 14px; min-height: 44px; padding: 0 16px; border: 0; border-left: 3px solid transparent; border-radius: 8px; background: none; color: var(--c-ink) !important; font-size: 16.5px; text-align: left; cursor: pointer; }
.lqz-enav__item svg { width: 22px; height: 22px; color: var(--c-ink-2); }
.lqz-enav__item:hover { background: #f4f7fc; }
.lqz-enav__item.is-on { border-left-color: var(--c-blue); background: var(--c-blue-soft); color: var(--c-blue) !important; font-weight: 600; }
.lqz-enav__item.is-on svg { color: var(--c-blue); }

.lqz-promo { padding: 18px 22px 22px; background: linear-gradient(180deg, #f3f2ff 0%, var(--c-card) 46%); }
.lqz-promo__art { display: block; width: 190px; margin: 0 auto 8px; }
.lqz .lqz-promo__title { font-size: 23px; font-weight: 800; line-height: 1.3; }
.lqz-promo__title span { background: linear-gradient(90deg, #5a4fe0, #8a5cf0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lqz-promo__list { display: flex; flex-direction: column; gap: 10px; margin: 14px 0 18px !important; font-size: 15.5px; }
.lqz-promo__list li { display: flex; align-items: center; gap: 10px; }
.lqz-promo__list svg { width: 20px; height: 20px; color: var(--c-green); stroke-width: 3; }

/* Cột giữa */
.lqz-exam__center { min-width: 0; padding: 22px 18px 24px; }
.lqz-bar { display: grid; grid-template-columns: minmax(0, 1fr) auto auto auto; gap: 12px; align-items: stretch; margin-bottom: 24px; }
.lqz-bar__prog { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 4px 12px; padding: 12px 16px; border: 1px solid var(--c-line); border-radius: 10px; }
.lqz-bar__label { grid-column: 1 / -1; font-size: 16.5px; font-weight: 500; }
.lqz-bar__label b { font-weight: 700; }
.lqz-bar__track { height: 12px; overflow: hidden; border-radius: 99px; background: #e6ebf3; }
.lqz-bar__track i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, #1f63e0, #3b82f6); transition: width .25s; }
.lqz-bar__pct { color: var(--c-ink-2); font-size: 14.5px; font-weight: 600; }
.lqz-timer { display: flex; align-items: center; gap: 12px; padding: 0 20px; border: 1px solid #cddcf8; border-radius: 10px; background: #edf3fe; }
.lqz-timer > svg { width: 28px; height: 28px; color: var(--c-blue); }
.lqz-timer span { display: flex; flex-direction: column; line-height: 1.25; }
.lqz-timer small { color: var(--c-ink-2); font-size: 14px; }
.lqz-timer b { color: var(--c-blue); font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.lqz-timer.is-low { border-color: #f3b3ae; background: var(--c-red-soft); }
.lqz-timer.is-low b, .lqz-timer.is-low > svg { color: var(--c-red); }
.lqz-sq { display: inline-flex; align-items: center; justify-content: center; width: 56px; border: 1px solid var(--c-line); border-radius: 10px; background: var(--c-card); cursor: pointer; }
.lqz-sq svg { width: 22px; height: 22px; }
.lqz-sq .lqz-i-pause, .lqz-sq .lqz-i-play { fill: currentColor; }
.lqz-sq .lqz-i-play, .lqz-exam.is-paused .lqz-sq .lqz-i-pause { display: none; }
.lqz-exam.is-paused .lqz-sq .lqz-i-play { display: block; }
.lqz-bar .lqz-btn--danger { min-width: 136px; padding: 0 20px; }
.lqz-bar .lqz-btn--danger svg { width: 22px; height: 22px; }

.lqz-q { position: relative; padding: 22px 20px 24px; border: 1px solid var(--c-line); border-radius: 12px; }
.lqz-q__tags { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.lqz-q__no { display: inline-flex; align-items: center; gap: .3em; height: 38px; padding: 0 16px; border-radius: 8px; background: linear-gradient(135deg, var(--c-violet), var(--c-violet-2)); color: #fff; font-size: 17.5px; font-weight: 600; }
.lqz-q__level { display: inline-flex; align-items: center; height: 34px; padding: 0 18px; border-radius: 99px; background: #e5effe; color: var(--c-blue); font-size: 15.5px; font-weight: 500; }
.lqz-q__fav { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; margin-left: auto; border: 1px solid var(--c-line); border-radius: 50%; background: var(--c-card); color: var(--c-muted); cursor: pointer; }
.lqz-q__fav svg { width: 19px; height: 19px; }
.lqz-q__fav.is-on { border-color: #ffc2c9; background: #fff0f2; color: #e53950; }
.lqz-q__fav.is-on svg { fill: currentColor; }
.lqz .lqz-q__title { margin-bottom: 18px; font-size: calc(21px * var(--lqz-fs)); font-weight: 700; line-height: 1.45; }
.lqz-opts { display: flex; flex-direction: column; gap: 12px; }
.lqz-opt { display: flex; align-items: center; gap: 14px; width: 100%; min-height: 50px; padding: 10px 20px; border: 1.5px solid #d9dfe9; border-radius: 9px; background: var(--c-card); color: var(--c-ink) !important; font-size: calc(17.5px * var(--lqz-fs)); line-height: 1.45; text-align: left; cursor: pointer; transition: border-color .15s, background .15s; }
.lqz-opt:not(:disabled):hover { border-color: var(--c-blue-line); background: #f7faff; }
.lqz-opt:disabled { cursor: default; }
.lqz-opt__radio { position: relative; width: 22px; height: 22px; border: 2px solid #b7c0cf; border-radius: 50%; background: var(--c-card); flex-shrink: 0; }
.lqz-opt__letter { font-weight: 700; }
.lqz-opt.is-picked { border-color: #8db3f6; background: #e8f1fe; }
.lqz-opt.is-picked .lqz-opt__radio { border-color: var(--c-blue); }
.lqz-opt.is-picked .lqz-opt__radio::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--c-blue); }
.lqz-opt.is-right { border-color: #8fd0a6; background: var(--c-green-soft); }
.lqz-opt.is-right .lqz-opt__radio { border-color: var(--c-green); }
.lqz-opt.is-right.is-picked .lqz-opt__radio::after { background: var(--c-green); }
.lqz-opt.is-wrong { border-color: #f1a9a3; background: var(--c-red-soft); }
.lqz-opt.is-wrong .lqz-opt__radio { border-color: var(--c-red); }
.lqz-opt.is-wrong .lqz-opt__radio::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--c-red); }

.lqz-ans { margin-top: 26px; overflow: hidden; border: 1px solid var(--c-green-line); border-radius: 10px; background: var(--c-green-soft); }
.lqz-ans__head { display: flex; align-items: center; gap: 12px; width: 100%; padding: 14px 20px; border: 0; background: none; color: var(--c-green-2) !important; font-size: 19px; font-weight: 700; text-align: left; cursor: pointer; }
.lqz-ans__head > span { flex: 1; }
.lqz-ans__ok, .lqz-ans__bad { width: 28px; height: 28px; color: #fff; fill: var(--c-green); }
.lqz-ans__bad, .lqz-ans.is-wrong .lqz-ans__ok { display: none; }
.lqz-ans.is-wrong .lqz-ans__bad { display: block; fill: var(--c-red); }
.lqz-ans.is-wrong { border-color: #f6cfcb; background: #fff7f6; }
.lqz-ans.is-wrong .lqz-ans__head { color: #b2342c !important; }
.lqz-ans.is-wrong .lqz-ans__head b { color: var(--c-green-2); }
.lqz-ans__caret { width: 22px; height: 22px; color: var(--c-ink-2); transition: transform .2s; }
.lqz-ans__head[aria-expanded="false"] .lqz-ans__caret { transform: rotate(180deg); }
.lqz-ans__head[aria-expanded="false"] + .lqz-ans__body { display: none; }
.lqz-ans__body { padding: 0 20px 18px; color: var(--c-ink); font-size: calc(16px * var(--lqz-fs)); line-height: 1.6; }
.lqz-ans__body b { font-weight: 700; }
.lqz-ans__basis { display: flex; gap: 10px; margin-top: 14px !important; padding-top: 14px; border-top: 1px solid var(--c-green-line); color: var(--c-ink-2); font-size: calc(15px * var(--lqz-fs)); }
.lqz-ans__basis svg { width: 21px; height: 21px; margin-top: 1px; color: var(--c-ink-2); }
.lqz-ans [data-qz-why][hidden] + .lqz-ans__basis { margin-top: 0 !important; padding-top: 0; border-top: 0; }

.lqz-paused { position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; border-radius: 12px; background: rgba(244, 246, 251, .96); color: var(--c-navy); font-size: 18px; }
.lqz-paused > svg { width: 40px; height: 40px; color: var(--c-blue); }
.lqz-qnav { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 26px; }
.lqz-qnav .lqz-btn { min-width: 172px; }
.lqz-check { display: inline-flex; align-items: center; gap: 12px; color: var(--c-ink); font-size: 16.5px; cursor: pointer; }
.lqz-check input { width: 22px; height: 22px; margin: 0; accent-color: var(--c-orange); cursor: pointer; }

/* Kết quả */
.lqz-result { position: relative; display: flex; align-items: center; gap: 24px; margin-bottom: 20px; padding: 20px 24px; border: 1px solid #cfe0fb; border-radius: 12px; background: linear-gradient(110deg, #eef4ff, #fff); }
.lqz-result.is-good { border-color: var(--c-green-line); background: linear-gradient(110deg, var(--c-green-soft), #fff); }
.lqz-result.is-low { border-color: #f6cfcb; background: linear-gradient(110deg, #fff4f3, #fff); }
.lqz-result__score { position: relative; width: 104px; height: 104px; flex-shrink: 0; }
.lqz-result__score svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.lqz-result__score circle { fill: none; stroke-width: 11; }
.lqz-result__score b { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--c-navy); font-size: 24px; }
.lqz-result.is-low .lqz-donut__val { stroke: var(--c-red); }
.lqz-result:not(.is-good):not(.is-low) .lqz-donut__val { stroke: var(--c-blue); }
.lqz-result__body { flex: 1; }
.lqz-result__body h2 { font-size: 21px; }
.lqz-result__stats { display: flex; gap: 30px; margin: 6px 0 4px !important; }
.lqz-result__stats small { display: block; color: var(--c-muted); font-size: 13px; }
.lqz-result__stats b { font-size: 19px; }
.lqz-result__note { color: var(--c-muted); font-size: 14px; }
.lqz-result__note a { color: var(--c-blue); font-weight: 600; }
.lqz-result__btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.lqz-result__x { position: absolute; top: 10px; right: 10px; display: inline-flex; padding: 4px; border: 0; background: none; color: var(--c-muted); cursor: pointer; }
.lqz-result__x svg { width: 20px; height: 20px; }

/* Khung đăng nhập / trống */
.lqz-gate { display: flex; flex-direction: column; align-items: center; padding: 50px 24px; text-align: center; }
.lqz-gate__icon { display: inline-flex; align-items: center; justify-content: center; width: 72px; height: 72px; margin-bottom: 16px; border-radius: 50%; background: var(--c-blue-soft); color: var(--c-blue); }
.lqz-gate__icon svg { width: 34px; height: 34px; }
.lqz-gate h2 { font-size: 24px; }
.lqz-gate > p { max-width: 520px; margin: 8px 0 22px !important; color: var(--c-ink-2); font-size: 16px; }
.lqz-gate__btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.lqz-gate__perks { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; margin-top: 24px !important; color: var(--c-ink-2); font-size: 14.5px; }
.lqz-gate__perks li { display: inline-flex; align-items: center; gap: 7px; }
.lqz-gate__perks svg { width: 18px; height: 18px; color: var(--c-green); }

/* Tab Thông tin / Xếp hạng / Bình luận */
.lqz-pane__title { display: flex; align-items: center; gap: 10px; margin-bottom: 10px !important; font-size: 22px; }
.lqz-pane__title svg { width: 26px; height: 26px; color: var(--c-blue); }
.lqz-pane__lead { margin-bottom: 16px !important; color: var(--c-ink-2); font-size: 15.5px; }
.lqz-facts { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--c-line); border-radius: 10px; overflow: hidden; }
.lqz-facts > div { display: flex; flex-direction: column; gap: 2px; padding: 12px 16px; border-bottom: 1px solid var(--c-line-2); }
.lqz-facts > div:nth-child(odd) { border-right: 1px solid var(--c-line-2); }
.lqz-facts dt { color: var(--c-muted); font-size: 13px; }
.lqz-facts dd { color: var(--c-ink); font-size: 15.5px; font-weight: 600; }
.lqz-prose { margin-top: 16px; color: var(--c-ink-2); font-size: 15.5px; line-height: 1.7; }
.lqz-howto { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px !important; color: var(--c-ink-2); font-size: 15px; }
.lqz-howto li { position: relative; padding-left: 18px; }
.lqz-howto li::before { content: ""; position: absolute; top: 9px; left: 2px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-blue); }
.lqz-cform { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 10px 12px; margin-bottom: 16px; }
.lqz-cform textarea { width: 100%; padding: 10px 12px; border: 1px solid #d5dce8; border-radius: var(--r-sm); background: var(--c-card); color: var(--c-ink); font: inherit; resize: vertical; }
.lqz-cform .lqz-btn { grid-column: 2; justify-self: end; }
.lqz-cmts { display: flex; flex-direction: column; }
.lqz-cmt { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-top: 1px solid var(--c-line-2); }
.lqz-cmt__av { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.lqz-cmt__head { display: flex; align-items: baseline; gap: 10px; }
.lqz-cmt__head time { color: var(--c-muted); font-size: 13px; }
.lqz-cmt__text { margin-top: 4px !important; color: var(--c-ink-2); line-height: 1.6; }

/* Cột phải màn làm bài */
.lqz-exam__right > .lqz-card { padding: 16px 20px 18px; }
.lqz-card__h { margin-bottom: 14px !important; padding-bottom: 12px; border-bottom: 1px solid var(--c-line-2); font-size: 18px; }
.lqz-eprog .lqz-card__h { padding-bottom: 12px; }
.lqz-eprog__row { display: flex; justify-content: space-between; margin-bottom: 8px !important; font-size: 14.5px; }
.lqz-eprog__track { display: block; height: 9px; overflow: hidden; border-radius: 99px; background: #e8edf4; }
.lqz-eprog__track i { display: block; width: 0; height: 100%; border-radius: 99px; background: var(--c-green); transition: width .25s; }
.lqz-eprog__legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px !important; color: var(--c-ink-2); font-size: 12px; }
.lqz-eprog__legend li, .lqz-pal__legend li { display: inline-flex; align-items: center; gap: 6px; }
.lqz-eprog__legend i, .lqz-pal__legend i { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-done { background: var(--c-green); }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-todo { border: 1px solid #d3dae6; background: #eef1f6; }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-flag { background: var(--c-orange); }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-current { border: 2px solid var(--c-blue); background: var(--c-card); }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-right { background: var(--c-green); }
:is(.lqz-eprog__legend, .lqz-pal__legend) i.is-wrong { background: var(--c-red); }
.lqz-pal__grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 9px; max-height: 222px; padding: 2px 4px 2px 2px; overflow-y: auto; scrollbar-width: thin; }
.lqz-pal__cell { position: relative; height: 36px; border: 1px solid #dde3ec; border-radius: 6px; background: var(--c-card); color: var(--c-ink) !important; font-size: 15px; cursor: pointer; }
.lqz-pal__cell:hover { border-color: var(--c-blue-line); }
.lqz-pal__cell.is-done { border-color: #bfe5c8; background: #cdeed5; }
.lqz-pal__cell.is-flag { border-color: #ffd89a; background: var(--c-orange-soft); color: #d0700a !important; font-weight: 700; }
.lqz-pal__cell.is-flag::after { content: ""; position: absolute; top: -1px; right: 5px; width: 9px; height: 12px; background: #f05a28; clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 72%, 0 100%); }
.lqz-pal__cell.is-current { border: 2px solid var(--c-blue); background: #eef4ff; color: var(--c-blue) !important; font-weight: 700; }
.lqz-pal__cell.is-right { border-color: #9fd8b0; background: #cdeed5; }
.lqz-pal__cell.is-wrong { border-color: #f3b3ae; background: #fde3e1; color: #b2342c !important; }
.lqz-pal__legend { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; margin-top: 14px !important; color: var(--c-ink-2); font-size: 13.5px; }
.lqz-tools ul { display: flex; flex-direction: column; }
.lqz-tools li { display: flex; align-items: center; gap: 14px; min-height: 48px; border-bottom: 1px solid var(--c-line-2); font-size: 15.5px; }
.lqz-tools li:last-child { border-bottom: 0; }
.lqz-tools li > svg, .lqz-tools__btn > svg:first-child { width: 24px; height: 24px; color: var(--c-ink-2); }
.lqz-tools li > span { flex: 1; }
.lqz-tools__btn { display: flex; flex: 1; align-items: center; gap: 14px; min-height: 48px; padding: 0; border: 0; background: none; font-size: 15.5px; text-align: left; cursor: pointer; }
.lqz-tools__btn span { flex: 1; }
.lqz-tools__go { width: 20px; height: 20px; }
.lqz-switch { position: relative; width: 66px; height: 32px; padding: 0; border: 1px solid var(--c-line); border-radius: 99px; background: #eef1f6; cursor: pointer; }
.lqz-switch i { position: absolute; top: 2px; left: 2px; display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 50%; background: #fff6d8; box-shadow: 0 1px 3px rgba(0, 0, 0, .15); transition: transform .2s; }
.lqz-switch svg { width: 18px; height: 18px; }
.lqz-switch__sun { color: #f2a10c; }
.lqz-switch__moon { display: none; color: #c9d4ff; }
.lqz-switch[aria-checked="true"] { background: #2b3550; }
.lqz-switch[aria-checked="true"] i { transform: translateX(34px); background: #3d4a6b; }
.lqz-switch[aria-checked="true"] .lqz-switch__sun { display: none; }
.lqz-switch[aria-checked="true"] .lqz-switch__moon { display: block; }
.lqz-fontbtns { display: inline-flex; overflow: hidden; border: 1px solid var(--c-line); border-radius: 8px; }
.lqz-fontbtns button { width: 44px; height: 34px; border: 0; background: var(--c-card); font-size: 15px; font-weight: 600; cursor: pointer; }
.lqz-fontbtns button + button { border-left: 1px solid var(--c-line); }
.lqz-fontbtns button:hover { background: var(--c-blue-soft); }

/* Hộp thoại phím tắt / báo lỗi */
.lqz-dialog { width: min(480px, calc(100vw - 32px)); padding: 0; border: 0; border-radius: 14px; background: #fff; color: #1e2a40; box-shadow: 0 24px 60px rgba(16, 31, 63, .3); font-family: "Inter", system-ui, sans-serif; }
.lqz-dialog::backdrop { background: rgba(10, 22, 48, .45); }
.lqz-dialog header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid #edf0f6; }
.lqz-dialog h2 { display: flex; align-items: center; gap: 10px; margin: 0; color: #101f3f; font-size: 18px; font-weight: 700; line-height: 1.3; }
.lqz-dialog h2 svg { width: 22px; height: 22px; color: #1f63e0; }
.lqz-dialog header button { display: inline-flex; padding: 4px; border: 0; background: none; cursor: pointer; }
.lqz-dialog header button svg { width: 20px; height: 20px; }
.lqz-keys { margin: 0; padding: 10px 20px 18px; }
.lqz-keys > div { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid #f0f2f7; }
.lqz-keys dd { margin: 0; color: #3e4a61; }
.lqz-dialog kbd { display: inline-block; min-width: 26px; padding: 2px 7px; border: 1px solid #dfe4ec; border-bottom-width: 2px; border-radius: 6px; background: #f8fafc; font-family: inherit; font-size: 13px; font-weight: 600; line-height: 1.5; text-align: center; }
.lqz-dialog form > :not(header):not(footer) { margin: 14px 20px 0; }
.lqz-dialog__lead { color: #3e4a61; font-size: 14.5px; }
.lqz-reasons { display: flex; flex-direction: column; gap: 8px; padding: 0; border: 0; }
.lqz-reasons label { display: flex; align-items: center; gap: 10px; font-size: 15px; cursor: pointer; }
.lqz-dialog textarea { width: calc(100% - 40px); padding: 10px 12px; border: 1px solid #d5dce8; border-radius: 8px; font: inherit; }
.lqz-dialog footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 20px 18px; }

/* ------------------------------------------------------------------ Trả phí (inc/quiz/qz-pay.php) */
.lqz-price { display: inline-flex; align-items: center; gap: 4px; height: 22px; padding: 0 8px; border-radius: 6px; font-size: 12.5px; font-weight: 700; vertical-align: 1px; white-space: nowrap; }
.lqz-price svg { width: 13px; height: 13px; }
.lqz-price--paid { background: #fff3d6; color: #b46d00; }
.lqz-price--cover { position: absolute; bottom: 8px; left: 8px; box-shadow: 0 2px 6px rgba(0, 0, 0, .15); }
.lqz-einfo__meta .lqz-price { height: 26px; font-size: 13.5px; }
.lqz-gate--pay .lqz-gate__icon { background: #fff3d6; color: #e39a07; }
.lqz-gate__note, .lqz-gate__law { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px; margin: 0 0 16px !important; color: var(--c-ink-2); font-size: 14.5px; }
.lqz-gate__note { padding: 8px 14px; border-radius: 8px; background: var(--c-orange-soft); }
.lqz-gate__law { display: block !important; margin: 18px 0 0 !important; text-align: center; }
.lqz-gate__law svg { vertical-align: -3px; }
.lqz-gate__note svg, .lqz-gate__law svg { width: 17px; height: 17px; }
.lqz-gate a { color: var(--c-blue); font-weight: 600; }
.lqz-buy { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; width: 100%; }
.lqz-buy__opt { display: flex; flex-direction: column; align-items: center; gap: 4px; width: 260px; padding: 18px 18px 16px; border: 1px solid var(--c-line); border-radius: 12px; background: var(--c-card); }
.lqz-buy__opt.is-best { border-color: #f3c66a; background: linear-gradient(180deg, #fffaf0, var(--c-card)); }
.lqz-buy__opt small { color: var(--c-muted); font-size: 13.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.lqz-buy__opt b { color: var(--c-navy); font-size: 24px; }
.lqz-buy__opt span { margin-bottom: 10px; color: var(--c-ink-2); font-size: 14px; }
.lqz-note { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 16px !important; padding: 10px 14px; border-radius: 10px; background: var(--c-blue-soft); color: var(--c-ink-2); font-size: 14.5px; }
.lqz-note svg { width: 18px; height: 18px; color: var(--c-blue); }
.lqz-note a { color: var(--c-blue); font-weight: 600; }
.lqz-note--ok { background: var(--c-green-soft); }
.lqz-note--ok svg { color: var(--c-green); }
.lqz-plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 16px !important; }
.lqz-plan-card { position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 22px 16px 18px; border: 1px solid var(--c-line); border-radius: 12px; text-align: center; }
.lqz-plan-card.is-best { border: 2px solid #f3c66a; box-shadow: 0 8px 20px rgba(227, 154, 7, .14); }
.lqz-plan-card__icon { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 12px; background: #fff3d6; color: #e39a07; }
.lqz-plan-card__icon.is-free { background: #e7f7ee; color: var(--c-green); }
.lqz-plan-card__icon svg { width: 24px; height: 24px; }
.lqz-plan-card h2 { font-size: 18px; }
.lqz-plan-card__price { color: var(--c-blue); font-size: 22px; font-weight: 800; }
.lqz-plan-card__desc { flex: 1; margin-bottom: 8px !important; color: var(--c-muted); font-size: 13.5px; }
.lqz-plan-card__off { position: absolute; top: 10px; right: 10px; padding: 2px 8px; border-radius: 6px; background: #ef3e36; color: #fff; font-size: 12.5px; font-weight: 700; }
.lqz-btn.is-static { cursor: default; }
.lqz-status { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: 6px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.lqz-status--gray { background: #eef1f6; color: #4b5568; }
.lqz-status--orange { background: var(--c-orange-soft); color: #b06a00; }
.lqz-status--green { background: var(--c-green-soft); color: var(--c-green-2); }
.lqz-status--red { background: var(--c-red-soft); color: var(--c-red); }
.lqz-order { margin-bottom: 8px; }
.lqz-order__amount { color: var(--c-blue) !important; font-size: 20px !important; }
.lqz-transfer { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 22px; margin-top: 16px; padding: 18px; border: 1px dashed var(--c-blue-line); border-radius: 12px; background: #f8fbff; }
.lqz-transfer__qr { width: 220px; height: auto; border-radius: 10px; background: #fff; }
.lqz-transfer__info { display: flex; flex: 1; flex-direction: column; gap: 10px; min-width: 240px; }
.lqz-transfer__info dt { color: var(--c-muted); font-size: 13px; }
.lqz-transfer__info dd { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.lqz-ref { color: var(--c-red); letter-spacing: .03em; }
.lqz-muted { color: var(--c-muted); font-size: 14px !important; }
.lqz-copy { display: inline-flex; padding: 4px; border: 1px solid var(--c-line); border-radius: 6px; background: var(--c-card); cursor: pointer; }
.lqz-copy svg { width: 15px; height: 15px; }
.lqz-order__btns { display: flex; justify-content: flex-end; gap: 10px; margin-top: 16px; }
@media (max-width: 860px) {
	.lqz-plans { grid-template-columns: 1fr 1fr; }
	.lqz-buy__opt { width: 100%; }
}

/* ------------------------------------------------------------------ Chế độ tối */
.lqz.is-dark {
	--c-navy: #eef2fb;
	--c-ink: #dbe2f0;
	--c-ink-2: #aeb8cc;
	--c-muted: #8b96ad;
	--c-line: #2d3850;
	--c-line-2: #263048;
	--c-bg: #0f1626;
	--c-card: #172034;
	--c-blue-soft: #1d2d52;
	--c-blue-line: #33508f;
	--c-green-soft: #14321f;
	--c-green-line: #22553a;
	--c-green-2: #5fd08e;
	--c-red-soft: #3a1c1f;
	--c-orange-soft: #3b2d14;
	--shadow: none;
}
.lqz.is-dark .lqz-opt { border-color: #33405c; }
.lqz.is-dark .lqz-opt.is-picked { border-color: #4f7fd6; background: #1d2d52; }
.lqz.is-dark .lqz-timer { border-color: #2f4677; background: #18284a; }
.lqz.is-dark .lqz-q__level { background: #1d2d52; color: #8fb3ff; }
.lqz.is-dark .lqz-pal__cell.is-done, .lqz.is-dark .lqz-pal__cell.is-right { border-color: #2c6a43; background: #1c4a30; }
.lqz.is-dark .lqz-pal__cell.is-current { background: #1d2d52; color: #8fb3ff !important; }
.lqz.is-dark .lqz-paused { background: rgba(15, 22, 38, .95); }
.lqz.is-dark .lqz-promo { background: linear-gradient(180deg, #232048 0%, var(--c-card) 46%); }
.lqz.is-dark :is(.lqz-bar__track, .lqz-eprog__track, .lqz-donut__track) { background: #263048; stroke: #263048; }
.lqz.is-dark .lqz-result { background: #172a4a; border-color: #2f4677; }
.lqz.is-dark .lqz-btn--soft { background: #1d2d52; }
.lqz.is-dark .lqz-switch { border-color: #3a4766; }
.lqz.is-dark .lqz-ans.is-wrong { background: #2c1a1d; border-color: #5a2a2e; }

/* ------------------------------------------------------------------ Màn hẹp */
@media (max-width: 1399px) {
	.lqz-exam { grid-template-columns: 250px minmax(0, 1fr) 290px; }
	.lqz-bar { grid-template-columns: minmax(0, 1fr) auto auto; }
	.lqz-bar__prog { grid-column: 1 / -1; }
	.lqz-cats__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
	.lqz-feat__track { grid-auto-columns: calc((100% - 2 * 18px) / 3); }
	.lqz-rows li.lqz-row { grid-template-columns: 28px minmax(0, 1fr) 120px 80px 84px auto; }
	.lqz-rows li.lqz-row .lqz-row__n:nth-of-type(3) { display: none; }
	.lqz-hero__art { width: 230px; }
	.lqz-hero__text { padding-right: 220px; }
}
@media (max-width: 1199px) {
	.lqz__wrap { grid-template-columns: minmax(0, 1fr); }
	.lqz__side { display: grid; grid-template-columns: 1fr 1fr; }
	.lqz-exam { grid-template-columns: minmax(0, 1fr) 290px; }
	.lqz-exam__left { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; order: 3; }
	.lqz-exam__center { order: 1; }
	.lqz-exam__right { order: 2; }
}
@media (max-width: 860px) {
	.lqz { padding: 12px 12px 32px; }
	.lqz__side, .lqz-exam__left { grid-template-columns: minmax(0, 1fr); }
	.lqz-exam { grid-template-columns: minmax(0, 1fr); }
	.lqz-hero { padding: 20px; }
	.lqz .lqz-hero__title { gap: 12px; font-size: 28px; }
	.lqz-hero__cap { width: 48px; height: 48px; margin: 0; }
	.lqz-hero__lead { margin: 8px 0 14px !important; font-size: 15.5px; }
	.lqz-hero__chips { margin-left: 0 !important; gap: 8px; }
	.lqz-hero__chips li { height: 34px; padding: 0 12px; font-size: 13px; }
	.lqz-hero__art { display: none; }
	.lqz-hero__text { padding-right: 0; }
	.lqz-search { grid-template-columns: 1fr 1fr; }
	.lqz-search__box { grid-column: 1 / -1; }
	.lqz-filter { grid-template-columns: 1fr 1fr; }
	.lqz-filter__btns { grid-column: 1 / -1; justify-content: flex-end; }
	.lqz-box { padding: 16px; }
	.lqz-box__head h2, .lqz-box__h1 { font-size: 19px; }
	.lqz-cats__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.lqz-feat__frame { margin: 0; }
	.lqz-feat__track { grid-auto-columns: 78%; }
	.lqz-feat__nav { display: none; }
	.lqz-rows li.lqz-row, .lqz-row--att { grid-template-columns: 24px minmax(0, 1fr) auto !important; row-gap: 4px; }
	.lqz-rows li.lqz-row .lqz-row__cat, .lqz-rows li.lqz-row .lqz-row__n { display: none; }
	.lqz-row__title { white-space: normal; }
	.lqz-kpis { grid-template-columns: 1fr 1fr; }
	.lqz-exam__center { padding: 14px 12px 18px; }
	.lqz-bar { grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
	.lqz-timer { padding: 8px 14px; }
	.lqz-bar .lqz-btn--danger { grid-column: 1 / -1; }
	.lqz-q { padding: 16px 14px; }
	.lqz .lqz-q__title { font-size: calc(18px * var(--lqz-fs)); }
	.lqz-opt { padding: 10px 14px; font-size: calc(16px * var(--lqz-fs)); }
	.lqz-qnav { flex-wrap: wrap; }
	.lqz-qnav .lqz-btn { flex: 1; min-width: 0; }
	.lqz-check { order: -1; width: 100%; justify-content: center; }
	.lqz-facts { grid-template-columns: 1fr; }
	.lqz-facts > div:nth-child(odd) { border-right: 0; }
	.lqz-result { flex-direction: column; text-align: center; }
	.lqz-result__stats, .lqz-result__btns { justify-content: center; }
}

/* Popup thanh toán QR */
.lqz-dialog--pay { width: min(440px, calc(100vw - 24px)); }
.lqz-dialog--pay header button { font-size: 18px; color: #6b7690; }
.lqz-pay { display: flex; flex-direction: column; align-items: center; padding: 14px 22px 20px; text-align: center; }
.lqz-pay__item { margin: 0 0 10px; color: #3e4a61; font-size: 14.5px; font-weight: 600; }
.lqz-pay__qr { width: 240px; height: auto; border: 1px solid #e1e6ef; border-radius: 12px; }
.lqz-pay__hint { margin: 8px 0 12px; color: #6b7690; font-size: 13px; }
.lqz-pay__warn { margin: 10px 0; padding: 10px 12px; border-radius: 8px; background: #fff3f2; color: #b2342c; font-size: 14px; }
.lqz-pay__info { width: 100%; margin: 0; border: 1px solid #edf0f6; border-radius: 10px; text-align: left; }
.lqz-pay__info > div { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 12px; border-bottom: 1px solid #edf0f6; }
.lqz-pay__info > div:last-child { border-bottom: 0; }
.lqz-pay__info dt { color: #6b7690; font-size: 13px; }
.lqz-pay__info dd { display: flex; align-items: center; gap: 6px; margin: 0; color: #1e2a40; font-size: 14.5px; }
.lqz-pay__amount { color: #1f63e0; font-size: 17px; }
.lqz-pay__state { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; margin: 14px 0 0; padding: 10px 12px; border-radius: 10px; background: #eaf1fe; color: #1e2a40; font-size: 13.5px; }
.lqz-pay__state.is-wait { background: #fff4de; }
.lqz-pay__state.is-ok { background: #e7f7ee; color: #178049; font-weight: 700; }
.lqz-spin { width: 14px; height: 14px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; flex-shrink: 0; opacity: .6; animation: lqz-spin .8s linear infinite; }
.lqz-pay__state.is-ok .lqz-spin { display: none; }
@keyframes lqz-spin { to { transform: rotate(360deg); } }
.lqz-pay__btns { display: flex; justify-content: center; gap: 10px; width: 100%; margin-top: 14px; }
.lqz-pay__btns .lqz-btn { flex: 1; }
.lqz-dialog .lqz-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 16px; border-radius: 8px; font: 600 15px/1.2 "Inter", system-ui, sans-serif; text-decoration: none; cursor: pointer; }
.lqz-dialog .lqz-btn--primary { border: 0; background: #1f63e0; color: #fff; }
.lqz-dialog .lqz-btn--ghost { border: 1px solid #e1e6ef; background: #fff; color: #3e4a61; }
.lqz-dialog .lqz-copy { display: inline-flex; padding: 2px 6px; border: 1px solid #e1e6ef; border-radius: 6px; background: #fff; font-size: 13px; cursor: pointer; }
.lqz-dialog .lqz-ref { color: #e0473f; letter-spacing: .03em; }

/* Hộp thoại luôn ở giữa màn hình (CSS theme đặt margin của <dialog> về 0) */
dialog.lqz-dialog { position: fixed; inset: 0; margin: auto !important; height: fit-content; max-height: calc(100vh - 32px); overflow: auto; }